Update criterion requirement from 0.4 to 0.5 #74

Job	Run time
Check (stable)	16s
(Linux) Builds (aarch64-linux-android)	2m 7s
Check (beta)	25s
(Linux) Builds (x86_64-unknown-linux-musl)	2m 36s
(Linux) Builds (wasm32-unknown-unknown)	1m 24s
Bench Compile (stable)	1m 22s
Check (1.69.0)	4m 12s
(OS X) Builds (aarch64-apple-ios)	2m 58s
(OS X) Builds (x86_64-apple-darwin)	2m 23s
(Windows) Builds (x86_64-pc-windows-msvc)	48s
Rustfmt (nightly)	17s
Test Suite (stable)	1m 58s
Test Suite (1.69.0)	3m 26s
	24m 12s

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